/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.felix.eventadmin.bridge.configuration;
import java.util.Arrays;
import java.util.Hashtable;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;
import org.osgi.service.cm.ConfigurationAdmin;
import org.osgi.service.cm.ConfigurationEvent;
import org.osgi.service.cm.ConfigurationListener;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;
import org.osgi.service.event.EventConstants;
/**
* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
*/
public class ConfigurationEventToEventAdminBridge implements
ConfigurationListener
{
private final BundleContext m_context;
public ConfigurationEventToEventAdminBridge(final BundleContext context)
{
m_context = context;
m_context.registerService(ConfigurationListener.class.getName(), this,
null);
}
public void configurationEvent(final ConfigurationEvent event)
{
final ServiceReference ref = m_context
.getServiceReference(EventAdmin.class.getName());
if(null != ref)
{
final EventAdmin eventAdmin = (EventAdmin) m_context
.getService(ref);
if(null != eventAdmin)
{
final String topic;
switch(event.getType())
{
case ConfigurationEvent.CM_UPDATED:
topic = "org/osgi/service/cm/ConfigurationEvent/CM_UPDATED";
break;
case ConfigurationEvent.CM_DELETED:
topic = "org/osgi/service/cm/ConfigurationEvent/CM_DELETED";
break;
default:
m_context.ungetService(ref);
return;
}
final Hashtable properties = new Hashtable();
if(null != event.getFactoryPid())
{
properties.put("cm.factoryPid", event.getFactoryPid());
}
properties.put("cm.pid", event.getPid());
final ServiceReference eventRef = event.getReference();
if(null == eventRef)
{
throw new IllegalArgumentException(
"ConfigurationEvent.getReference() may not be null");
}
properties.put(EventConstants.SERVICE, eventRef);
properties.put(EventConstants.SERVICE_ID, eventRef.getProperty(
EventConstants.SERVICE_ID));
final Object objectClass = eventRef.getProperty(
Constants.OBJECTCLASS);
if(!(objectClass instanceof String[])
|| !Arrays.asList((String[]) objectClass).contains(
ConfigurationAdmin.class.getName()))
{
throw new IllegalArgumentException(
"Bad objectclass: " + objectClass);
}
properties.put(EventConstants.SERVICE_OBJECTCLASS, objectClass);
properties.put(EventConstants.SERVICE_PID, eventRef.getProperty(
EventConstants.SERVICE_PID));
eventAdmin.postEvent(new Event(topic, properties));
m_context.ungetService(ref);
}
}
}
}